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I measure the battery about 3.8V.(F1 /R6 point).So I think the battery is fine. But I push the button can’t turn on it.But put into the cup can charge the battery. So how do I to check the board or more action? thanks
swat1230 your voltage maybe fine but it is not a good indication of your battery being okay. It is possible that your battery simply does not hold enough charge to supply the demand. I’d start with a new battery first, then re-evaluate. Check your switch circuitry etc. with your multimeter.
I’m having the same problem. Have you fixed it? Thanks!
